Unpacking Shopify Analytics Spikes: Understanding Your pr_prod_strat URLs

Hey fellow store owners!

Lately, there's been a bit of a buzz—and some head-scratching—in the Shopify community forums about a peculiar analytics anomaly. Many of you, just like me, probably rely heavily on your Shopify Analytics reports to make crucial business decisions. So, when those reports start showing strange patterns, it’s natural to feel a little uneasy.

Specifically, a discussion kicked off by yuanjie (and later summarized expertly by jennifeergordonn) highlighted a sudden and significant spike in certain product recommendation URLs appearing as landing pages in Shopify Analytics, particularly those containing parameters like pr_prod_strat=pinned, pr_rec_id, _pos, and others. This started popping up around May 5, and it’s been causing quite a stir because these URLs often show a bizarre pattern: one session, but hundreds or even thousands of pageviews, a 0% bounce rate, and zero add-to-cart or conversion activity. Confusing, right?

Here's an example of the kind of URL that sparked the conversation:

Demystifying the "1 Session, Many Pageviews" Phenomenon

Before we dive into the "why" of this spike, let’s clear up a common misunderstanding about how Shopify's "Sessions by landing page" report works. As lumine wisely pointed out in the thread, this report doesn't just count pageviews of that specific landing page URL. Instead, it aggregates all pageviews within any session that started on that landing page. So, if a user lands on a URL with pr_prod_strat=pinned, and then navigates to 423 other pages on your store in that same session, Shopify Analytics will attribute 1 session and 424 pageviews to that initial landing page URL.

The key here is the 0% bounce rate. If a session has a 0% bounce rate, it means the user clicked through to at least one other page. This usually indicates real user engagement. So, while the numbers look huge, the 1 session/N pageviews ratio itself isn't inherently problematic if it's real user behavior. The real problem, as many merchants including yuanjie observed, is why these pr_* URLs, which were almost non-existent as landing pages before May 5, suddenly started showing up in such massive numbers.

The Real Head-Scratcher: Why the Sudden Spike in Landing Pages?

This is where the community discussion really dug in. Several theories emerged, and it’s likely a combination of factors rather than a single culprit:

Theme and App Updates

One of the strongest contenders is a recent theme or app update. It's possible that a change pushed around May 4-5 might have started exposing these product recommendation parameters more aggressively. For instance, if your theme began rendering recommendation links with raw pr_* parameters in canonical tags, social share cards, or even your sitemap, these URLs could suddenly become discoverable and directly accessible. This makes them potential landing pages via bookmarks, link previews, or aggregators. It's definitely worth checking your theme version history and any app updates around that timeframe.

Shopify Search & Discovery Configuration

Shopify’s own Search & Discovery features, especially "Pinned Products," could also be playing a role. If there was a change in how these recommendation slots serve up URLs, or if they became more active across more product pages, it could lead to these distinct pr_* URLs being tracked as landing pages. This is something to investigate within your Shopify admin's Search & Discovery settings.

Bot and Crawler Activity

Let's not forget the ever-present threat of bots! As mastroke mentioned, many merchants are struggling with bot traffic disrupting Shopify analytics. While the 0% bounce rate suggests real user activity for the sessions that do occur, there's always a chance that some of this traffic, especially the "Direct / no clear social or ad referrer" kind, could be from advanced crawlers or prefetch mechanisms that Shopify's current bot filtering isn't catching perfectly. This could inflate pageviews without actual conversions.

Your Action Plan: What You Can Do Now

So, what can you do if you’re seeing these anomalies? Here’s a breakdown of steps, combining insights from the community:

1. Review Recent Changes: Go back to May 4-5 in your store's activity logs. Did you update your theme? Install a new app? Modify any Shopify Search & Discovery settings? Even a small change could have a ripple effect.
2. Check Your Recommendation Widgets: Are "People Also Bought," "More To Love," or "Recently Viewed" widgets configured differently or newly enabled? These are modules specifically mentioned by yuanjie as being affected.
3. Cross-Reference Your Data: Don't rely solely on Shopify Analytics. Compare the traffic patterns for these suspicious URLs with your Google Analytics 4 (GA4) data or even server logs if you have access. This can help you determine if the traffic is truly unique to Shopify's reporting or if it's appearing elsewhere. Also, monitor if these URLs are being unexpectedly indexed by search engines.
4. Filtering Your Reports: This is crucial for getting clean data.
   • Understand the Metric: Keep in mind that "Sessions by landing page" groups all pageviews from a session that started on that URL.
   • Segment by Bounce Rate: lumine suggested segmenting your custom reports by Bounce Rate > 0. This will help you focus on truly engaged sessions and filter out any single-page visits that might be skewing your data.
   • Exclude URL Parameters (Shopify Plus): If you’re on Shopify Plus, you have more granular control. You can often exclude specific URL parameters like pr_prod_strat= from your reports. This is a powerful way to clean up your landing page data. While not explicitly detailed as a step-by-step for non-Plus, knowing this option exists is important. For non-Plus users, you'd likely need to export data and clean it manually or rely on external analytics tools for cleaner reporting.
   • Monitor Traffic Patterns: Pay attention to referrer sources, device types, and geographic locations for these anomalous sessions. Unusual patterns might signal bot activity.

Ultimately, the consensus in the community is that this looks more like an analytics reporting anomaly tied to how recommendation parameters are being tracked and attributed, rather than a direct SEO or conversion performance issue. However, as order_ops_guy rightly warned, optimizing around bad data can lead to poor business decisions. So, staying vigilant and taking steps to understand and filter this data is incredibly important until Shopify provides more clarity or implements a fix. Hopefully, Shopify will address this with improved reporting features soon, as mastroke suggested. Keep an eye on your analytics, try these troubleshooting steps, and let's hope for clearer data ahead!